When I run "/usr/local/openmpi/bin/mpiexec -np 3 ls", Open MPI crashes
with this error message:

--------------------------------------------------------------------------
It looks like opal_init failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during opal_init; some of which are due to configuration or
environment problems. This failure appears to be an internal failure;
here's some additional information (which may only be relevant to an
Open MPI developer):

opal_memchecker_base_select failed
--> Returned value -13 instead of OPAL_SUCCESS
--------------------------------------------------------------------------
[ccdestefanolinux:06037] [[INVALID],INVALID] ORTE_ERROR_LOG: Not found
in file ../../orte/runtime/orte_init.c at line 77
[ccdestefanolinux:06037] [[INVALID],INVALID] ORTE_ERROR_LOG: Not found
in file ../../../../orte/tools/orterun/orterun.c at line 543

It seems that the memchecker does not work, because after
reconfiguring without "--enable-memchecker" and rebuilding, I don't
receive the same error anymore.